configfs: Add permission and ownership to configfs objects.

[powerpc.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 7da3361..0cfcd1c 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -34,6 +34,7 @@
 #include <linux/percpu.h>
 #include <linux/topology.h>
 #include <linux/seccomp.h>
+#include <linux/rcupdate.h>
 
 #include <linux/auxvec.h>      /* For AT_VECTOR_SIZE */
 
@@ -104,6 +105,7 @@ extern unsigned long nr_iowait(void);
 #include <linux/param.h>
 #include <linux/resource.h>
 #include <linux/timer.h>
+#include <linux/hrtimer.h>
 
 #include <asm/processor.h>
 
@@ -158,6 +160,7 @@ extern unsigned long nr_iowait(void);
 #define SCHED_NORMAL           0
 #define SCHED_FIFO             1
 #define SCHED_RR               2
+#define SCHED_BATCH            3
 
 struct sched_param {
        int sched_priority;
@@ -350,8 +353,16 @@ struct sighand_struct {
        atomic_t                count;
        struct k_sigaction      action[_NSIG];
        spinlock_t              siglock;
+       struct rcu_head         rcu;
 };
 
+extern void sighand_free_cb(struct rcu_head *rhp);
+
+static inline void sighand_free(struct sighand_struct *sp)
+{
+       call_rcu(&sp->rcu, sighand_free_cb);
+}
+
 /*
  * NOTE! "signal_struct" does not have it's own
  * locking, because a shared signal_struct always
@@ -389,8 +400,8 @@ struct signal_struct {
        struct list_head posix_timers;
 
        /* ITIMER_REAL timer for the process */
-       struct timer_list real_timer;
-       unsigned long it_real_value, it_real_incr;
+       struct hrtimer real_timer;
+       ktime_t it_real_incr;
 
        /* ITIMER_PROF and ITIMER_VIRTUAL timers for the process */
        cputime_t it_prof_expires, it_virt_expires;
@@ -460,9 +471,9 @@ struct signal_struct {
 
 /*
  * Priority of a process goes from 0..MAX_PRIO-1, valid RT
- * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL tasks are
- * in the range MAX_RT_PRIO..MAX_PRIO-1. Priority values
- * are inverted: lower p->prio value means higher priority.
+ * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH
+ * tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority
+ * values are inverted: lower p->prio value means higher priority.
  *
  * The MAX_USER_RT_PRIO value allows the actual maximum
  * RT priority to be separate from the value exported to
@@ -621,7 +632,14 @@ struct sched_domain {
 
 extern void partition_sched_domains(cpumask_t *partition1,
                                    cpumask_t *partition2);
-#endif /* CONFIG_SMP */
+
+/*
+ * Maximum cache size the migration-costs auto-tuning code will
+ * search from:
+ */
+extern unsigned int max_cache_size;
+
+#endif /* CONFIG_SMP */
 
 
 struct io_context;                     /* See blkdev.h */
@@ -679,8 +697,11 @@ struct task_struct {
 
        int lock_depth;         /* BKL lock depth */
 
-#if defined(CONFIG_SMP) && defined(__ARCH_WANT_UNLOCKED_CTXSW)
+#if defined(CONFIG_SMP)
+       int last_waker_cpu;     /* CPU that last woke this task up */
+#if defined(__ARCH_WANT_UNLOCKED_CTXSW)
        int oncpu;
+#endif
 #endif
        int prio, static_prio;
        struct list_head run_list;
@@ -762,6 +783,7 @@ struct task_struct {
        unsigned keep_capabilities:1;
        struct user_struct *user;
 #ifdef CONFIG_KEYS
+       struct key *request_key_auth;   /* assumed request_key authority */
        struct key *thread_keyring;     /* keyring private to this thread */
        unsigned char jit_keyring;      /* default keyring to attach requested keys to */
 #endif
@@ -787,6 +809,7 @@ struct task_struct {
        struct sighand_struct *sighand;
 
        sigset_t blocked, real_blocked;
+       sigset_t saved_sigmask;         /* To be restored with TIF_RESTORE_SIGMASK */
        struct sigpending pending;
 
        unsigned long sas_ss_sp;
@@ -807,6 +830,11 @@ struct task_struct {
 /* Protection of proc_dentry: nesting proc_lock, dcache_lock, write_lock_irq(&tasklist_lock); */
        spinlock_t proc_lock;
 
+#ifdef CONFIG_DEBUG_MUTEXES
+       /* mutex deadlock detection */
+       struct mutex_waiter *blocked_on;
+#endif
+
 /* journalling filesystem info */
        void *journal_info;
 
@@ -844,6 +872,7 @@ struct task_struct {
        int cpuset_mems_generation;
 #endif
        atomic_t fs_excl;       /* holding fs exclusive resources */
+       struct rcu_head rcu;
 };
 
 static inline pid_t process_group(struct task_struct *tsk)
@@ -867,8 +896,14 @@ static inline int pid_alive(struct task_struct *p)
 extern void free_task(struct task_struct *tsk);
 extern void __put_task_struct(struct task_struct *tsk);
 #define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
-#define put_task_struct(tsk) \
-do { if (atomic_dec_and_test(&(tsk)->usage)) __put_task_struct(tsk); } while(0)
+
+extern void __put_task_struct_cb(struct rcu_head *rhp);
+
+static inline void put_task_struct(struct task_struct *t)
+{
+       if (atomic_dec_and_test(&t->usage))
+               call_rcu(&t->rcu, __put_task_struct_cb);
+}
 
 /*
  * Per process flags
@@ -895,6 +930,7 @@ do { if (atomic_dec_and_test(&(tsk)->usage)) __put_task_struct(tsk); } while(0)
 #define PF_SYNCWRITE   0x00200000      /* I am doing a sync write */
 #define PF_BORROWED_MM 0x00400000      /* I am a kthread doing use_mm */
 #define PF_RANDOMIZE   0x00800000      /* randomize virtual address space */
+#define PF_SWAPWRITE   0x01000000      /* Allowed to write to swap */
 
 /*
  * Only the _current_ task can read/write to tsk->flags, but other
@@ -1088,21 +1124,6 @@ static inline int sas_ss_flags(unsigned long sp)
                : on_sig_stack(sp) ? SS_ONSTACK : 0);
 }
 
-
-#ifdef CONFIG_SECURITY
-/* code is in security.c */
-extern int capable(int cap);
-#else
-static inline int capable(int cap)
-{
-       if (cap_raised(current->cap_effective, cap)) {
-               current->flags |= PF_SUPERPRIV;
-               return 1;
-       }
-       return 0;
-}
-#endif
-
 /*
  * Routines for handling mm_structs
  */
@@ -1221,6 +1242,7 @@ static inline void task_unlock(struct task_struct *p)
 #ifndef __HAVE_THREAD_FUNCTIONS
 
 #define task_thread_info(task) (task)->thread_info
+#define task_stack_page(task) ((void*)((task)->thread_info))
 
 static inline void setup_thread_stack(struct task_struct *p, struct task_struct *org)
 {
@@ -1366,12 +1388,8 @@ static inline void arch_pick_mmap_layout(struct mm_struct *mm)
 extern long sched_setaffinity(pid_t pid, cpumask_t new_mask);
 extern long sched_getaffinity(pid_t pid, cpumask_t *mask);
 
-#ifdef CONFIG_MAGIC_SYSRQ
-
 extern void normalize_rt_tasks(void);
 
-#endif
-
 #ifdef CONFIG_PM
 /*
  * Check if a process has been frozen